Resilient mounting



April 27, 1948. G. H..KAEMMER| |NG 2,440,670

* RESILIENT MOUNTING Filed sept. 1, 1944 Patented Apr. 27, ld@

nEsmEN'r MOUNTING Gustav Iii. laemmerling, Erie, Pa., assignor to Lord Manufacturing Company, Erie, Pa.,` a corporation of Pennsylvania i Y Application. September l, 1944, Serial No. 552,297

' 3 Claims. (Cl. 248-358) lustrated in the accompanying drawings as follows:

Fig. l shows a side elevation, partly in section, on the line I -l in Fig. 2.

Fig. 2, a plan view of the mounting.

Fig. 3, a section on the line 3--3 in Fig. 1.

Fig. 4,a plan View of a sleeve or pin secured in the mounting.

Fig. 5 illustrates a dual arrangement of said mountings.

Fig. 6 is a plan view of a modification, and Fig. 7 is a sectional elevation of another modification.

l marks a mounting arm. Thlshas a web 2 and lateral anges 3 at the top and bottom providing an I-shaped section for the rubber arm. The arm is preferably provided with an enlargement d, preferably one at each end of the arm, and the enlargement is provided with aA vertical perforation. If desired a hollow pin li may be inserted in the perforation, the pin being substantially larger than the perforation with the rubber at neutral. In other words, the rubber surrounding the perforation is stretched by the insertion of the pin.

In Fig. 5' is shown a support l with a bolt 8 extending from the support througha pin 6. If

desired under some circumstances the pin 6 may be omitted and the rubber directly attached to the boit 8, in which case the body of the bolt within the rubber is preferably enlarged to correspond to the outside diameter of the pin 6 and the threaded end of the bolt is reduced to the inside diameter of the pin. A supported member 9 is arranged on a plate l0 and va bolt il extends through the'l plate I0 and the pin 6 in the arm.

This outwardly extending arm may, with this single arrangement, provide a convenient shear support for-the load. The lateral flanges prevent the side bending of the arm under such load and also add, of course, to the shear action.

If desired, a single support such as described may be oppositely arranged, as shown in Fig. 5, in which case both arms carry the single sup- 2 port. This involves a slight shift in the longitudinal dimension of the rubber but this is so slight under ordinary conditions as to offer no disturbance to the shear action of the mounting. The load is `transferred from the bolt to the er'ids of the pin which provide a rigid clamping surface and from the outer walls of thepin to the rubber. Under severe deection, there is a tendency for the rubber to pull away from the tension side of the pin if the localized ltension exceeds the initial tension in the rubber due to insertion of the pin. This eiect is decreased by triangular openings l2 which distribute the stress from the Web-2 to the rubber around. the pin. From one aspect the web 2 is branched and attached at spaced points tothe ends d.

Another arrangement for preventing localized stress is shown in Fig. 6 where there are two arcuate webs i3 branching from opposite sides of the pins. This provides an even better distribution of stress around the pins since the load from the pins is transferred in equal amounts `from opposite sides to the arms i3. The curved arms provide -a softer mounting in directions transverse to the pins.

In Fig. 7 is shownv a modication in which enlarged pins I4 at the heads of studs I5 are forced into sockets I6 and held by stretching of th'e rubber. The pins are shorter than the sockets so the unstressed rubber at the mouths of the sockets flows over the edges of the pins providing lips Il which holdthe pins against axis displacement. The characteristics of the mounting are similar to the other forms. i

vIn all of the mountings, the load is accommodated by shear deection of the lateral arms and the load is transferred to the arms through the surface of the load supporting pins in contact with the rubber. For severe duty the pins may be bonded to the rubber, for example by the use of rubber cement, or by vulcanization.

Because the rubber is always in contact with the pins chafing is eliminated which increases the life of the rubber In the Fig. 7 construction, the lips I1 may be molded in the sockets I6 to more securely hold the pin in the sockets.

' What I claim as new is:

1. A mounting comprising a laterally extending rubber arm free to deect in shear, I-shaped contact of the pin with the arm.

3. A mounting comprising alaterally extending y rubberarm. I-shaped in cross section, having a vertically extending web having an enlarged end provided with a vertically extending opening, a

vertically extending. opening in the web adjacent the enlarged end whereby the load transfer to said end is distributed onopposite sides of the rst opening, and a load supporting pin extending into the first opening and secured therein by the contracting gripping `action of the rubber on the pin.

4'. A mountingv comprising a laterally extending rubber arm free to deflect in shear having ends provided with vertically extending openings, and load supporting pins extending into and xed in the openings and transferring load to the arm through surface contact of the pins with the arm.

5. A mounting comprising a laterally extend- -ing rubber arm free to deilect in shear having yopening in one end of the arm, a load supporting pin having a load attaching section at one end and an enlarged section of greater diameter and shorter lengthv than said opening pressed into the opening and held therein by the gripping action o! the rubber on the sides and end of said section and transferring load to the arm through surface contact of the pin. with the arm.

7. A rubber mounting comprising laterally spaced ends, arms spaced apart between and\con nected to spaced points on said ends and'free to deect in shear, and vertical load supporting pins fixed in said ends and transferring load to the arm through surface contact of the pins with the arm.

8. A rubber mounting having an end with a vertical load supporting pin xed therein and transferring load to the arm through surface contact of the pin with the arm, and a laterally extending arm free to deflect in shear having branched portions connected to spaced points on said end to distribute the load on said pin,

GUSTAV H. KAEMMERLING.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS N umber VName Date 1,401,121 Allen Dec. 27, 1921 1,727,609 Kramer Sept. 10, 1929 2,044,714 Trott June 16, 1936 2,239,299 Lord Apr. 22, 1941 2,260,022 Gwinn Oct. 21, 1941 FOREIGN PATENTS Number Country Date 342,105 Great Britain Jan. 29, 1931 

